<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular>
      <swiper-item v-for="(item, index) in goods_info.pics" :key="index" @click="preview(index)">
        <image :src="item.pics_big"></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息 -->
    <view class="goods-info-box">
      <view class="price">￥{{goods_info.goods_price}}</view>
      <view class="goods-info-body">
        <view class="goods-name">
          {{goods_info.goods_name}}
        </view>
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <view class="freight">快递：免运费</view>
    </view>
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <view class="goods-nav">
      <uni-goods-nav 
        :options="options" 
        :fill="true" 
        :button-group="buttonGroup" 
        @click="onClick"
        @buttonClick="buttonClick" 
      />
    </view>
  </view>
</template>

<script>
  import { mapMutations, mapGetters } from 'vuex'
  export default {
    data() {
      return {
        goods_info: {},
        options: [{
          icon: 'shop',
          text: '店铺'
        }, {
          icon: 'cart',
          text: '购物车',
          info: 0
        }],
        buttonGroup: [{
            text: '加入购物车',
            backgroundColor: '#ff0000',
            color: '#fff'
          },
          {
            text: '立即购买',
            backgroundColor: '#ffa200',
            color: '#fff'
          }
        ]
      };
    },
    onLoad(options) {
      this.getGoodsInfo(options.goods_id)
    },
    computed: {
      ...mapGetters('m_cart', ['total'])
    },
    watch: {
      total: {
        handler(newValue) {
          this.options[1].info = newValue
        },
        immediate: true
      }
    },
    methods: {
      ...mapMutations('m_cart', ['addToCart']),
      async getGoodsInfo(goods_id) {
        const { data } = await uni.$http.get('/api/public/v1/goods/detail', {goods_id})
        if (data.meta.status !== 200) return uni.$showMsg()
        // 将img转出块元素，去除图片底部空白间隙，webp在ios上可能异常
        data.message.goods_introduce = data.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ').replace(/webp/g, 'jpg')
        this.goods_info = data.message
      },
      preview(index) {
        uni.previewImage({
          current: index,
          urls: this.goods_info.pics.map(item => item.pics_big)
        })
      },
      onClick(e) {
        if (e.content.text === '购物车') {
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      buttonClick(e) {
        const goods = {
          goods_id: this.goods_info.goods_id,
          goods_name: this.goods_info.goods_name,
          goods_price: this.goods_info.goods_price,
          goods_count: 1,
          goods_small_logo: this.goods_info.goods_small_logo,
          goods_state: true
        }
        
        if (e.content.text === '加入购物车') {
          this.addToCart(goods)
        }
      }
    }
  }
</script>

<style lang="scss">
swiper {
  height: 750rpx;
  image {
    width: 100%;
    height: 100%;
  }
}
.goods-info-box {
  padding: 10px;
  padding-right: 0;
  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }
  .goods-info-body {
    display: flex;
    justify-content: space-between;
    .goods-name {
      font-size: 13px;
      padding-right: 10px;
    }
    .favi {
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }
  .freight {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
}
.goods-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
.goods-detail-container {
  padding-bottom: 50px;
}
</style>
